1120424021021 has 2 divisors, whose sum is σ = 1120424021022. Its totient is φ = 1120424021020.

The previous prime is 1120424021011. The next prime is 1120424021047. The reversal of 1120424021021 is 1201204240211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 976566909796 + 143857111225 = 988214^2 + 379285^2 .

It is an emirp because it is prime and its reverse (1201204240211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1120424021021 - 2⁶ = 1120424020957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1120424020984 and 1120424021002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120424021011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560212010510 + 560212010511.

It is an arithmetic number, because the mean of its divisors is an integer number (560212010511).

Almost surely, 2^{1120424021021} is an apocalyptic number.

It is an amenable number.

1120424021021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120424021021 is an equidigital number, since it uses as much as digits as its factorization.

1120424021021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1120424021021 its reverse (1201204240211), we get a palindrome (2321628261232).

The spelling of 1120424021021 in words is "one trillion, one hundred twenty billion, four hundred twenty-four million, twenty-one thousand, twenty-one".